[jira] [Updated] (IMPALA-11238) Avoid the need for COMPUTE SATS for Iceberg tables

["Zoltán Borók-Nagy (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IMPALA-11238?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Zoltán Borók-Nagy updated IMPALA-11238:
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    Summary: Avoid the need for COMPUTE SATS for Iceberg tables  (was: Avoid the need for COMPUTE STAST for Iceberg tables)

> Avoid the need for COMPUTE SATS for Iceberg tables
> --------------------------------------------------
>
>                 Key: IMPALA-11238
>                 URL: https://issues.apache.org/jira/browse/IMPALA-11238
>             Project: IMPALA
>          Issue Type: Improvement
>          Components: Frontend
>            Reporter: Zoltán Borók-Nagy
>            Priority: Major
>              Labels: impala-iceberg
>
> We still need to issue COMPUTE STATS for Iceberg tables to do proper planning.
> The main reason for it that Iceberg metadata lacks NDV information about columns at the table level.
> There are plans in Iceberg to store HyperLogLog arrays for data files, so once we have that we could use that information.
> Until that maybe we could use some heuristics from Iceberg metadata when there is no precise NDV available.



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